I’m building a national-level sports betting application that must launch simultaneously on iOS and Android. The core objective is a smooth, legal-compliant betting experience on both platforms, with a clean UI that scales easily as new sports or promotions are added. Here’s the framework I have in mind: • Native or cross-platform codebase that meets Apple App Store and Google Play guidelines. • End-to-end account flow: sign-up, KYC, secure deposits / withdrawals. • Modular architecture so I can bolt on live scores, in-play wagering, or personalised bet history later without rewriting the whole app. Backend stack, odds feed provider, and payment gateway are open for your recommendation as long as they’re reliable and already approved for real-money wagering. Deliverable: production-ready iOS and Android builds, source code, and a short hand-off guide so my team can manage routine updates once the project goes live. If this is comfortably within your wheelhouse, tell me how you would structure the build, which tech you prefer, and a realistic timeline to reach submission-ready binaries.